package com.team.mail.cart.vo;

import lombok.Data;

import java.math.BigDecimal;
import java.util.List;

/**
 * <p>
 * 整个购物车
 * 需要计算属性，必须重写他的get方法，保证每次获取属性都会进行计算
 */

@Data
public class Cart {

    List<CartItem> items;
    private Integer countNum;  //商品数量
    private Integer countType;//商品类型数量

    private BigDecimal totalAmount;//商品总价
    private BigDecimal reduce = new BigDecimal("0.00"); //减免价格

    public List<CartItem> getItems() {
        return items;
    }

    public void setItems(List<CartItem> items) {
        this.items = items;
    }

    /**
     * 计算商品总量
     * 在get的时候直接获取list的数据把每一项count加到了一起
     *
     * @return
     */
    public Integer getCountNum() {
        int count = 0;
        if (items != null && items.size() > 0) {
            for (CartItem item : items) {
                count += item.getCount();
            }
        }
        return count;
    }

    public void setCountNum(Integer countNum) {
        this.countNum = countNum;
    }

    /**
     * 获取类型、只获取1
     *
     * @return
     */
    public Integer getCountType() {
        int count = 0;
        if (items != null && items.size() > 0) {
            for (CartItem item : items) {
                count += 1;
            }
        }
        return count;
    }


    /**
     * @return
     * @TotalAmount 商品总价
     */
    public BigDecimal getTotalAmount() {
        BigDecimal amount = new BigDecimal("0");
        //计算购物项总价
        if (items != null && items.size() > 0) {
            for (CartItem item : items) {
                //购物车如果选中就加、不选择就不加
                if (item.getCheck()) {
                    BigDecimal totalPrice = item.getTotalPrice();//获取已经加好的购物项
                    amount = amount.add(totalPrice); //加上
                }

            }
        }
        //减去优惠总价
        BigDecimal subtract = amount.subtract(getReduce());

        return amount;
    }


    public BigDecimal getReduce() {
        return reduce;
    }

    public void setReduce(BigDecimal reduce) {
        this.reduce = reduce;
    }
}
